template question - C / C++ / MFC Discussion Boards

CFileDialog stops me writing to log file

ChrisBidmead21-Sep-04 4:36

21-Sep-04 4:36

i have an odd run time error occuring my app. it is a simple SMTP program. when i select button1 it opens a CFiledialog as it should if i select "cancel" it works as it should no problems, but if i select "ok" the selected file path is returned as it should, however when the message is sent no data is written to the log file.
this occurs even if the path returned is removed before sending the data it follows the same code path as if i had not selected a path

the button code is as follows

void CMail2Dlg::OnButton1()
{
UpdateData(); // saves control data to variables
// Create an instance
CFileDialog fileDlg( TRUE, NULL, NULL, OFN_ALLOWMULTISELECT | OFN_HIDEREADONLY, "All Files (*.*)|*.*||", this);

// Initializes m_ofn structure
fileDlg.m_ofn.lpstrTitle = "Attach File";

// Call DoModal
if ( fileDlg.DoModal() == IDOK) // seems to be the cause of the problem!!!!
{
CString szlstfile = fileDlg.GetPathName(); // This is your selected file name with path
m_att = szlstfile; //sets path to a variable of my main modal dialog
UpdateData(FALSE); //variables to controls
}
}

// the following code is writing of data to a file which occurs in various functions

ofstream logc ("logs.txt",ios::out | ios::app);
if (logc.is_open())
{
logc << rVal; // rVal is the data
logc.close();
}

please could any1 help Confused | :confused:

Re: CFileDialog stops me writing to log file

David Crow21-Sep-04 5:45

David Crow

21-Sep-04 5:45

ChrisBidmead wrote:
i have an odd run time error...

And that error is??

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CFileDialog stops me writing to log file

ChrisBidmead21-Sep-04 6:21

ChrisBidmead

21-Sep-04 6:21

there is no error message! the problem is that it just seems to ignore the output to the txt file

Re: CFileDialog stops me writing to log file

David Crow21-Sep-04 8:34

David Crow

21-Sep-04 8:34

It does not appear that the CFileDialog code and the ofstream code are in any way related. True?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CFileDialog stops me writing to log file

ChrisBidmead21-Sep-04 10:20

ChrisBidmead

21-Sep-04 10:20

the ofstream code is run weather or not the CFileDialog code is. so not they are not related

Re: CFileDialog stops me writing to log file

David Crow21-Sep-04 10:24

David Crow

21-Sep-04 10:24

Ok, so are we looking at two separate issues here? I tried your ofstream code and it worked fine. I did not try the CFileDialog code but it looked correct.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Window not restoring from Task Bar

LannieK21-Sep-04 4:04

LannieK

21-Sep-04 4:04

I have an application that was created using VC++ that does not restore when it is minimized on the Task Bar. Well, technically, it will restore if you right-click on it and select "Restore," but it does not restore if you just click on it. I suspect that it may be related to the fact that the app has no menu, but that isn't supported by any data. I haven't seen any mention of anyone with a similar problem, so I thought I'd ask here if anyone has encountered similar problems and if there are any solutions.

template question

sandrineV21-Sep-04 4:02

sandrineV

21-Sep-04 4:02

Hello,

I am trying to create a function which will return different members of my class according to an enumeration. The thing is that the different members do not have the same type : one of them is a CArray<int,int>, the others are CArray<int*,int*>, and I might have other arrays later on.

So in the .h file for the class, I created a template function in the following way :
CMyDataClass{
template <typename t="">
CArray<t,t>* GetDataList(LIST_TYPE t){
switch(t){
case t1 :
return &m_1; (let's say m1 is a CArray<int,int>)
break;
case t2 :
return &m_2;
break;
case t3 :
return &m_3;
break;
}
};
}

Everything builds fine.

However, when in another class I try to call the template function, say to retrieve m_1 :

CArray<int,int>* datalist;
datalist=MyClass->GetDataList(CMyDataClass::t1);

I get the following compilation error :

>>>class CArray<t,t> *__thiscall CMyDataClass::GetDataList(enum >>>CMyDataClass::LIST_TYPE)' : could not deduce template argument for 'T'

I don't see whether I have badly written my template function, or if it is the call to this template function that is wrong.
Could anyone give me some advice please ?

Thanks in advance.

send text using serial comm

mark18221-Sep-04 3:54

mark182

21-Sep-04 3:54

my project focus on serial communication
i want to send text file using it
and i dont know how, can any body help me?

Re: send text using serial comm

Nicholas Cardi21-Sep-04 5:15

Nicholas Cardi

21-Sep-04 5:15

You need to look at the CreateFile Api. Serial Reading and writing on windows is done the same way file writing is done.

Best Of Luck

Forever Developing

Re: send text using serial comm

ThatsAlok23-Sep-04 3:37

ThatsAlok

23-Sep-04 3:37

Search for CSerialPort Class IN CP,that will solve your problem

-----------------------------
"I Think It Will Help"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

How to add Integer type Member Variable to a ComboBox?

pubududilena21-Sep-04 3:25

pubududilena

21-Sep-04 3:25

hi all,
I am using Visual C++,MFC for My Project. I added a Combo Box to the Dialog.Now I want to add Integer typed variable to the ComboBox.But In the ClassWizard ,"Add Member Variable" Dialog Box, There is no room for integer type.So can't we add integer type as Member variable using class wizard to ComboBoxes?.If possible ,How do I do that ?

expect a answer...
thanks..

Re: How to add Integer type Member Variable to a ComboBox?

mark18221-Sep-04 3:37

mark182

21-Sep-04 3:37

1.first you make member variabel as a string,
such as : m_strTest.
you add using class wizard.

2.then you add data for the ComboBox
3.if you want to get data from combo box, follow this code :
int intData;
switch(atoi(m_strTest))
{
case data you insert1:
intData= 1;
break;
case data you insert2:
intData= 2;
break;
}
UpdateData(FALSE);

Re: How to add Integer type Member Variable to a ComboBox?

pubududilena21-Sep-04 3:52

pubududilena

21-Sep-04 3:52

yes .that is right. I mean that,Is there direct way to add integer type Variables to ComboBoxes..
I saw in some programs ,they directly use integer type like this:

void network::DoDataExchange(CDataExchange* pDX)
{CPropertyPage::DoDataExchange(pDX);
//{{AFX_DATA_MAP(network)
DDX_CBIndex(pDX, IDC_COMBO1, m_Band);
//}}AFX_DATA_MAP
}

m_Band is a integer variable.
So there must be a direct way to add integer type variable for a comboBox using Wizard.
if any one know that,send me a reply....
thanks..

Re: How to add Integer type Member Variable to a ComboBox?

David Crow21-Sep-04 5:37

David Crow

21-Sep-04 5:37

pubududilena wrote:
Is there direct way to add integer type Variables to ComboBoxes

Yes.

for (int nIndex = 0; nIndex < 10; nIndex++)
{
    CString strIndex;
    strIndex.Format("%d", nIndex);
    m_combobox.AddString(strIndex);
}

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

execute device manager

mark18221-Sep-04 3:24

mark182

21-Sep-04 3:24

hello guys....
i want to execute device manager using WinExec in MFC Vis C++
The File name is devmgmt.msc
when i execute using run in windows, it can run.
But when i used it using mfc, it can't run
can somebody help me ?
The Code I wrote :

WinExec("C:\Winnt\system32\devmgmt.msc",SW_SHOW);

Re: execute device manager

BlackDice21-Sep-04 6:55

BlackDice

21-Sep-04 6:55

ShellExecute() won't work?

[insert witty comment here]

bdiamond Sleepy | :zzz:

Re: execute device manager

Alexander ^M.,21-Sep-04 9:47

Alexander ^M.,

21-Sep-04 9:47

using WinExec you should call "C:\WINNT\system32\mmc.exe C:\WINNT\system32\devmgmt.msc".

Don't try it, just do it! Wink | ;-)

Re: execute device manager

shiraztk22-Sep-04 0:02

shiraztk

22-Sep-04 0:02

ShellExecute(NULL,"open","devmgmt.msc",NULL,NULL,SW_SHOW);

The Best Relligion is Science.
Once you understand it, you will know God.

scheduler

muharrem21-Sep-04 2:49

muharrem

21-Sep-04 2:49

hello everybody,

I need to write kind of scheduler. It will trigger an event every day at 00:00,
00:30, 08:00, 08:30, 16:00 and 16:30.

Can anybody show me a way how to do it in MFC?

Thanks,
Muharrem

Re: scheduler

David Crow21-Sep-04 5:40

David Crow

21-Sep-04 5:40

MFC or not, using the ITaskScheduler and ITask interfaces is the easiest way.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

static and dynamic linking

ns21-Sep-04 2:38

21-Sep-04 2:38

I have an app that uses a dll. I will be launching two copies of this app simultaneously. This app uses a dll (no mfc in it). I had made this a win32 dll and didnt see anything about linking options. The way I use this dll is through including the h file, putting the dll in the exe folder and linking in the .lib file through project settings. However I think I am having trouble because I want each copy of the exe to have its own copy of the dll (there are static variables in the dll), and I suspect that its actually being shared and I have only one copy being used by both exes . How do I arange things so that each exe can have its own copy of the dll? My dll functions look like:

Q20_API int Ainit(init_params * params);
This name was generated by the appwizard when i made the win32 dll project.

Thanks,
sb

Switching problem between view and dialog attached

ledallam21-Sep-04 2:19

ledallam

21-Sep-04 2:19

Hello,

I have a view. On my view I attached a dialog which has a menu. When I click on view, the dialog appears to be grayed, but when clicked on dialog it appears to be enabled. The same is the case with view, it appears to be grayed when clicked on dialog. Is there any way to make the dialog appear as enabled always irrespective of the focus on it?
can anyone please help me to solve this?

Thanks
Madhavi

Header File required

Mythri.B.L21-Sep-04 2:07

Mythri.B.L

21-Sep-04 2:07

Hello,
I would like to know from where I can download the header file "Wbemidl.h". I have tried, but could not find anywhere. Can anyone help me on the same?
Regards,
Mythri

Re: Header File required

David Crow21-Sep-04 2:46

David Crow

21-Sep-04 2:46

It's included with the Windows SDK.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.